Just installed a Neco Mk1 garage remote control unit ,, when wire with the 240v input the small tx at the top of unit went pop ,, where it says 240V input does the polarity matter here ?

SOURCE: 50Hz to 60Hz conversion

Hi, Your idea is basically sound and should work as long as the UPS originally is designed to produce 240V 60Hz and has its own built in timebase. The reason is that the input as long as the voltage matches makes no difference (50 or 60 Hz). By design, the UPS converts the input voltage to DC to charge the internal battery. The battery then powers an electronic circuitry that produces the 240V 60Hz. The input is then isolated from the output in terms of frequency. This is a common design, however, there are some (not many) that uses for its local oscillation sampling from the source and therefore will replicate the input frequency to its output, but very rare; it's better that you know they exist. Hope this be of some help/idea. Post back how things turn up or should you need further information. Good luck and kind regards. P.S. The only problem with 50 and 60 Hz is heat buildup which is tolerable and still within safe parameters. The only time the 50/60 HZ makes a big difference is when motors are used, timers such as in the early designs of microwave ovens, washing machines, etc., pumps and other highly inductive consumers. Most electronic devices converts the AC input to DC and therefore the frequency has negligible effect. Of course others may see it differently.

SOURCE: I have 2-240V (4.2V) basebaord heaters, Need Wiring Diagram

you get 120V from any phase (black OR red) to neutral
you get 240V from phase to phase (between black and red) and in this scenario you don't need the white wire.
So for you, connect the black to 1 pole of the breaker and the red to the other pole, connect the green wire to the ground strip and you are done.
A white wire is NEVER connected to a circuit breaker anyway, it is a grounded wire, it would be like connecting a green wire to a black wire, bad idea.
the National electrical code specifies red and black wire color for 240VAC circuits.
As Ask Hank mentionned, nothing wrong with 10/3 wire.

SOURCE: Wiring diagram for Ramsond 18000 BTU Ductless

See link below for detailed wiring. I found it very helpful



http://www.ramsond.com/minisplit/wiring/detailedwire5170.pdf

SOURCE: I have the Fahrenheat Model FUH 724 heater. The

1st you will belucky if you actually have 240 v, most
homes are usually 220v. In youyr case you need to start at the breaker panel.

This is an example:
You have a Double Pole Single Throw breaker. Black
Wire is hot and goes into one side of breaker,if you havea red wire that goes into the other have of the
breaker.

The white wire ties in the nuetral bar and the bare wire into the ground bus bar. At the unit you hook up the red and the black wire which will supply the 240
Volts, you could tie the white and the ground wires together into the grounding terminal

SOURCE: plug wiring diagram for 240v outlet 7000w blackmax

Probably its similar to the wiring on page 31 of this manual (pdf page 28) of this manual, reference NGK-7000HE: http://www.electricgeneratorsdirect.com/manuals/NGK%20Generator%20Honda%20engine.pdf