SHOWING WHAT SIZE WIRE TO USE FOR HEAT PUMP

[@dustinpomeroy8817]

That tip for the liquitight fitting is great,thanks you just saved me a ton of time in the future.

[@kennethrutledge9222]

ThankYou for your time and expertise!! I’m taking on a job of installing a heat pump at my house and needless to say I was always just a shade tree mechanic and now it looks like I’ll take the shade tree electricians title as well!!!😊😊 I know nothing of electrical and with the economy dying I have to do this myself!! ThankYou again!!

[@adrianchavira5223]

That is no how you size wire conductor or breakers for AC motors . You have to check the Name Plate in the unit you need the Amps on the FLA from there you multiply that for 1.25 to get the amperage. You go to table 310.16 to find the correct size for your conductor under the 75 column. For the breaker you multiply the FLA x 2.50 and that will be your protection for short circuit and ground faults.

[@robertcarbin]

Hi David I have a Question , How many #8 Wires can you put in 3/4 inch Sealtight Flex? Thank you Bob

[@hvactecster79]

Another great tutorial video. Great step by step for those learning this trade. Take care, Brett

[@luiselizalde6757]

Excellent

[@bluecollarmillionaire4life]

Hope it helps. Thanks

[@markfowler6200]

Love it! Very Clear!

[@luiselizalde6757]

Thank you David.

[@james77011]

Nice video...❤😊

[@burhanhaider1645]

Thank you

[@Samnang1965]

Hi I do like your instruction very well helpful. ? I’m going to buy Mrcool DIY-18-HP-230Bmini-split AC &heat pump 230v may be 25A do I need double pole 30a breaker & # 10/3 also an outdoor 30a shut off box ? Thanks

[@bluecollarmillionaire4life]

Yes you can buried that seal tight flex, make you use blue glue on your fittings, have a good day my friend.

[@anvibrimel41]

Thanks for your great explanation but what type of wire do we need to use ?

[@bobbydigital8]

Thnx for the vid. Does code permit a tech to make a whip as long as they want?

[@rotaxrider]

Great Videos!!!! I got a question about a future Mini Heat Pump Installation The Electrical Data for the sized unit says: Power Supply 208/230V MCA 15 MOCP 20 Also the wiring diagram for the Main board shows this Heat Pump is wired with a 220V Base Pan Heater and a 220V Crank Case Heater. My ambient temperatures will drop down to -20 Celsius and colder. The whip that came with it is #10 I want to make sure I'm sizing everything correctly. So the Data Table is showing a 20 Amp fuse and the field wiring from the Main to the Disconnect would be 12 Gauge. That seems small. Can i jump up to a next size safely?

[@bgregg55]

IIRC, lowes has pre-wired 6 foot 10ga whips in stock.

[@BalerRepair]

Good informative detailed videos

[@stcharleshometheater]

How is it in hvac a 6 Guage wire is acceptable for a 60 amp circuit? Is there an exception?

[@rustblade5021]

great thanks, not much online about how to do this.

[@bluecollarmillionaire4life]

Thanks

[@troyb.4101]

How about a video on the disconnect ona heat strip installation. . Do they need a separate disconect or can the be the same one used as the heat pump?

[@coleknight1977]

It has to have its own disconnect.

[@old64goat]

Great video David, I wonder if that flex conduit can be buried for my generator, I have 25 feet of 10 4 I like to pull through it. Now I know what a whip is....LOL

[@Weasel_NM575]

You mean 10/3! You don’t count the ground only conductors

[@troyb.4101]

I always add a neutral white wire also if I can.

[@dondelillo521]

Ok. So, two hot wires will carry 240 volts to the unit. How will that 240-volt return to the electrical panel?

[@AngelFlores-jx1pf]

Through L1 and L2

[@billcowhig5739]

@@AngelFlores-jx1pf that was my question as well. I thought that 240 V circuit needed to have a neutral wire, along with an equipment grounding conductor. At the power transformer, it is a 240 V output formed by a single phase winding of the three phase transmission system when it arrives from the utility, and split into two 120 V legs by drawing a neutral off the utility transformer, midway down the single phase output winding, giving 120 V from each hot wire to neutral and 240 V across the two hot wires (call them L1 and L2). The OPD circuit breaker is two pole, so it energizes both L1 and L2 at the same time. That gives you 240V between L2 and L2, which is needed by the HVAC. If you put a neutral in the whip the HVAC could have 120 V circuits as well as the 240 V supply. If the current in L1 is balanced with the current flowing in L2, then you might say that L2 is the return from L1, however, some modern day heat pump systems are inverter driven, isolating the branch circuit load from the motors it is driving, and in the inverter electronics (digital electronics) there are harmonic currents created that need to be brought back via a neutral conductor. At the breaker panel the neutral coming from the utility is BONDED to the ground buss, so at that point, Ground is Neutral, and vice-versa. That is the only place in the residential wiring where this is the case. The ground is used for safety, in case something metal accidentally gets energized by contacting one of the hot circuit conductors, as it provides a conductive path back to ground reference voltage, so you would not get electrocuted if you got between an energized metal part and your body provided a path to ground. That third wire he put into his whip has nothing to do with the circuit he is installing, which definitively tells you he intends to use L2 as the return path that completes the circuit. His whip will not work for some equipment.

[@andytraiger4079]

that was one expensive demonstration!

[@NougatCN]

M'kay

[@NougatCN]

Thomas gores' dad

[@Gabriel-vz7ml]

Thank you David.