- #120 VOLT WATER WELL BLADE DESKCONNECT HOW TO#
- #120 VOLT WATER WELL BLADE DESKCONNECT GENERATOR#
- #120 VOLT WATER WELL BLADE DESKCONNECT MANUAL#
#120 VOLT WATER WELL BLADE DESKCONNECT GENERATOR#
If you want to configure this as a hard-wired sort of thing (for instance, if you already have a transfer switch or generator interlocked subpanel installed), it's not impossible (or particularly expensive), it just requires a bit of unconventional (but still Code insofar that putting a 240V water heater on a 120V supply can be considered Code to begin with) wiring.
#120 VOLT WATER WELL BLADE DESKCONNECT HOW TO#
How to hardwire this switcheroo (properly!) Make sure to wire up the water heater end first, and not to leave the unused cord connected at either end! Make sure to label the cord as "FOR WATER HEATER ONLY" so someone doesn't use it on an appliance that will pull 30A at 120V - a 15A/250V fuse in the adapter assembly would be a wise thing to have, even, as protection against such oopses.Ĭhange cords when making the generator connection, as your water heater has a terminal box on it that can be used - a 14AWG power cord with screw leads at one end and a normal 5-15P at the other can be used, wired as you describe. Use an adapter cord wired as you describe (with 14AWG wire) to plug the NEMA 6-30 into a 5-15 (regular) receptacle. I'd replace the NEMA 10 with a NEMA 6 and then either: The correct plug and socket is a NEMA 6-30, which is "hot-hot-ground" instead of the "hot-hot-neutral" of the NEMA 10 series. While it's not unsafe currently if it was wired directly back to the main panel as your appliance is 240V only and thus needs no neutral, the NEMA 10 was intended for 120/240V apps, not 240V-only apps like yours. You have the wrong plug and socket configuration for your 240V wiring though. You are indeed correct that the two water heater hots should be connected to hot and neutral of the 120V supply, and the supply ground should ground the water heater. You are indeed spot on that your heater will draw 9.375A when connected across a 120V supply.
120v generator ground to water heater's "240v" neutral (which is actually bolted to the water heater's chassis).120v generator neutral to water heater's "240v" hot #2.120v generator hot to water heater's "240v" hot #1.When connected to the generator, the water heater would be its ONLY load. The two hot leads from its power cord are connected to something inside the water heater, and the middle (neutral) lead from the power cord is connected to a screw on the water heater's chassis.īuild a custom extension cord with receptacle suitable for the water heater at one end, and plug suitable for the generator at the other.
The water heater has a standard NEMA 10-30 plug. The sticker on the side lists the following specs: Phase 1 1 It's 10+ years old, and has no "smart" features or electronics whatsoever. My hot water heater (unlikely to be replaced anytime soon) is a standard 40-gallon electric water heater (US/Craftmaster Water Heater Company, model E1F40RD045V). I live alone, so I don't have to supply hot (or at least tepid) water to anyone besides myself. Is this correct? Would it REALLY draw only 1,125 watts (9.375 amperes) from the generator? Do I have the connections right, or are there additional things to consider with regard to neutral and ground? This seems to imply that when running, the water heater would draw slightly more power than a toaster (9A), but less power than my laser printer (11A when preheating the fuser or actively printing). As far as I know, it's a straightforward pure resistive load, and only one heating element at a time is ever in use (top heats until water reaches set point, then bottom heats until either bottom reaches set point or top falls below set point). specifically, I'm strugging to figure out how many amperes my water heater will draw when powered by 120 volts instead of 240 volts, so I can size the wire and plug appropriately.īased on my understanding of Ohm's Law, when fed 120v (pin mapping below), the water heater will draw 9.375 amperes, and its heating coils will output 1,125 watts of heat. I don't need water that's steaming hot, but I really want to be able to take showers that are at LEAST "tolerably tepid" when running from generator power for days or weeks at a time (when connected, the water heater could be the generator's ONLY load if necessary). Hurricanes happen, and knock the power out for weeks at a time when they do.
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