I'm here for help solving the problem of suppling a 240v, 45amp kiln off the grid. The catch is, we can't just use a large portable generator. So,

-can you put three or more inverter generators in parallel?

-can you get 240 volts out of paralleled 120volt inverter generators? Is there equipment that can do this? (transformer?)

-can you put inverter generators into series to raise voltage?

-how would you supply 240volts and 50amps of power off grid if you couldn't use without a large portable generator?

Any ideas/suggests welcome.

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    \$\begingroup\$ You need a method to synchronize them, which will not be cheap. \$\endgroup\$ – Ron Beyer Jun 7 '20 at 19:13
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    \$\begingroup\$ Yes, you can parallel inverters, but it's not trivial. If doing something involving a kiln off-grid, give some thought to using actual fire instead of electricity for it. \$\endgroup\$ – Hearth Jun 7 '20 at 19:15
  • \$\begingroup\$ Some Honda generators come with this feature. Don’t know if they scale all the way up to 50 A though. \$\endgroup\$ – winny Jun 7 '20 at 19:16
  • \$\begingroup\$ Some models of Honda's inverter generators can be paralleled - but I don't think you can get 50 Amps - don't know about 240 volts, either. \$\endgroup\$ – Peter Bennett Jun 7 '20 at 19:17
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    \$\begingroup\$ Is it a single heating element or a multiple that could each be run from a separate supply? \$\endgroup\$ – Finbarr Jun 7 '20 at 19:25

Consider a large propane fired burner as the main heat flux, then drop the electric needs to just temperature regulation.


Can you use a gas operated kiln? With some modifications you might be able to rectify the AC to DC, so it would be easier to run generators in parallel to heat a resistive load. With AC you would have to synchronize frequency and phase.

  • \$\begingroup\$ I generally consider "off grid" to mean no connection to the electric or gas utilities, but if that's not the case this is a good answer too. \$\endgroup\$ – Hearth Jun 7 '20 at 19:50
  • \$\begingroup\$ True, I guess it often means that you don't want to depend on consumables like gas bottles, so you'd have to produce the gas yourself. In temporary situation a ~10 kg gas bottle will you get you pretty far. \$\endgroup\$ – Ralph Jun 10 '20 at 20:14

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