| Contact |
| “Y”
Adapter with In-Line Step-Down Transformer to Produce 115 volts,
GFI Protected, from a 3 Conductor System |
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| Suspended Platforms are designed for 3
wire cord systems at 230 volts. Two of the three wires are the lectrical
circuit members and are 230 volts relative to each other. The third
wire is the Equipment Ground. The Equipment Ground is a safety device
provided for worker protection and not as a current carrying circuit
member. The Equipment Ground is intended to provide a low resistance
path to ground in the even exposed metal is energized by electrical
shorting.
Some users have been taking one 230 circuit conductor and the Equipment Ground as a source of 115 volts but exposes workers to unnecessary risk and does not comply with Electrical Code requirements. THERE IS NO SAFE, CODE APPROVED METHOD OF PRODUCING 115 VOLTS USING THE AVAILABLE CONDUCTORS, (IN A THREE CONDUCTOR, 250 VOLT SYSTEM), WITHOUT A TRANSFORMER. We have two systems of step-down transformers that you can offer to your customers who require 115 volt outlets available on the stage. Both transformers contain GROUND FAULT protected duplex receptacle with a rain proof cover. Three groups of transformers are available. The 8 amp transformer
will provide a maximum amperage draw of 8 amps. You could therefore
draw 4 amps from each half of the duplex receptacle, 5 amps and
3 amps, 6 amps and 2 amps or the full 8 amps from jus one. The same
principle holds true for the other two choices. The 3KW (26 amp)
can handle two right angle grinders under load. |
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Figure “A”
For High Activity of Suspended Stages |
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| This unit is designed to save time. When it is anticipated that the stage will have considerable floor-to-floor movement during the day, this unit would be preferred. The regular yoke is disconnected at the hoisting motor, the special reverse “Y” is attached, and that is the last time that the worker has to worry about it until is over. The hoisting motor is receiving 220 volts and the transformer is producing 115 volts fro the worker’s electric tools. |
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| *Compatible with the Safway Steel Products, Inc system. | |||||||||||||||||||
Figure “B”
For Low Activity of Suspended Stages |
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| This unit is designed to save money. Money is saved on the unit because we have eliminated the special reverse “Y” and also because we do not have as many wiring devices and boots. When a worker wishes to move to a different level, it will be necessary to disconnect from the transformer and reconnect to the hoisting motor. On arriving at the new floor, the worker will have to reverse the process; disconnect the connector from the hoisting motor and connect it to the step-down transformer. |
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| *Compatible with Safway Stel Products, Inc system. | |||||||||||||||||||
| Please Note: We are not using a standard ratio of 1 for 2 in our transformers. We have chosen to use special transformers 1 for 1.75. The suspended scaffold industry rarely finds itself with excess voltage at the jobsite. If we have 200 volts and reduce 1 for 2 we have 100 volts and this is too low. |
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