- MSB to be installed on the raised platform.
- The location where the MSB is installed should have good ventilation, illumination & affected by minimum vibration.
- No water or the oil pipes should pass above the MSB.
- There should be an adequate space around the MSB allowing comfortable operation & maintenance.
- The operating floor space in front & behind of the MSB should be covered with an anti skid, insulated rubber mats with a minimum thickness of about 15 mm.
- Panel doors should be in the locked position.
- Door opening mechanism should be interlocked with the power supply.
- The enclosure should be drip proof.
- MSB should be dead front type. (i.e. All the live conductor should pass behind MSB)
- Every equipment onboard must be properly earthed & also MSB must be properly earthed.
- Every incoming & outgoing feed must be protected by a switch fuse or the circuit breaker.
- Insulation resistance should not be less than(<) 1 Mega Ohm in any case. Insulation Resistance (IR) to be checked & records are maintained.
- All meters must be calibrated periodically & records are maintained.
- All the meters, switches, fuses, push button, indicating lamps, etc. should be in working condition & identified with individual name plate or tag.
- All the interlocks must be in the working condition.
- Operating switch gear, tools such as the circuit breaker handle, fuse puller, lamp grip, etc. must be readily available & to be used.
- Red tag / name plate indicating high voltage & danger sign should be fitted
- Appropriate ready to use fire extinguishers should be positioned nearby. (CO2 & DCP)
- Charts indicating drill procedures in case of the electric shocks must be displayed near the MSB.
- Wiring diagram of the equipment laminated or framed indicating supply system must be displayed nearby.
- All the appropriate spares should be properly preserved & protected, individually packed & identified, & should be readily available for use.
- Earth fault indication should be fitted & displayed in front of the panel.
- 24 volt battery supply emergency light should be provided near the MSB.
